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Table 3 Variables predicting total economic cost of nosocomial Pseudomonas aeruginosa isolates. Barcelona (Spain), 2005–2006, (N = 402)

From: Hospital costs of nosocomial multi-drug resistant Pseudomonas aeruginosa acquisition

Independent variable

Coefficient

(95% CI)

P

Antibiotic susceptibility pattern

   

 Non-resistant

1.00

  

 Resistant

1.37

(1.08-1.72)

0.009

 Multi-drug resistant

1.77

(1.41-2.22)

<0.001

Sex, male

1.12

(0.91-1.37)

0.277

Age

1.00

(0.98-1.00)

0.161

Source of infection

   

 Respiratory

0.91

(0.67-1.22)

0.538

 Skin & soft tissue

0.85

(0.61-1.16)

0.311

 Genitourinary

0.96

(0.67-1.36)

0.827

Clinical conditions

   

 Chronic obstructive pulmonary disease

0.79

(0.62-1.00)

0.045

 Solid neoplasm

1.00

(0.79-1.24)

0.979

 Diabetes mellitus

1.22

(0.96-1.55)

0.102

 Renal disease

0.85

(0.61-1.16)

0.313

 Liver disease

1.20

(0.87-1.65)

0.261

UCI stay post infection

3.46

(2.70-4.41)

<0.001

Average total cost per DRG

1.43

(1.28-1.60)

<0.001

In-hospital mortality

0.96

(0.75-1.21)

0.720